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Astronomers discover the earliest, hottest galaxy cluster in the universe, and it breaks all the rules
The galaxy cluster appears hotter and more mature than it should for its young age, challenging what we think we know about how these cities of galaxies form.
Watch astronaut Mike Fincke tie NASA spacewalking record on Jan. 8
NASA astronauts Mike Fincke and Zena Cardman will conduct a historic spacewalk outside the International Space Station on Thursday morning (Jan. 8), and you can watch the action live.
'Tron Ares' debuts on streaming today: Here's how to watch Jared Leto's sci-fi AI blockbuster
Jared Leto's sci-fi flick hits the Disney+ streaming grid starting January 7.
January belongs to Jupiter: See the king of planets in the night sky this month
Jupiter currently shines as a brilliant silvery "star" in the constellation Gemini the Twins, low in the east-northeast sky as dusk slowly fades. You really should catch the show.
The best binoculars in 2026 — models for stargazing, wildlife and general use
Buying Guide We have fully tested and ranked the best binoculars for stargazing and spotting galaxies.
Astrophotographer captures rare footage of the Hubble Telescope crossing the sun (video)
The Hubble Telescope appears as a tiny silhouette during a perfectly timed solar transit captured from Puerto Rico.
On this day in space: Jan. 7, 1610: Galileo discovers 3 moons of Jupiter
On January 7, 1610, the Italian astronomer Galileo Galilei discovered three of Jupiter's moons: Callisto, Europa and Io.
I thought I knew the night sky, but what I saw from the Canary Islands left me speechless
From volcanic landscapes to world-class observatories, a journey through the Canary Islands reveals a night sky unlike anything I'd seen before.
